Lasting-jack



v(No Model.)

1).?. MESSER.

L'A STING JACK.

Np. F15,5oo. y Patented 1100.211887.

l a a EL? L! :M IE- sfmnuaf Hummm L;

UNITED STATES PATENT EETCE.

DANIEL F. MESSER, OF KENNEBUNK, MAINE, ASSIGNOE TO L. W'ILDER CHASE, TRUSTEE, OF HAVERHILL, MASSACHUSETTS.

LA STlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 375,500, dated December 27, 1887.

Application filed February 14, 1887. Serial No. 227,587. (No model.)

To @ZZ whom it may concern:

Beit known that I, DANIEL F. MESSER, of Kennebunk, in the county of York and State of Maine, have invented certain new and useful Improvements in LastingJacks, of which the following, taken in connection with the accompanying drawings, is aspecification.

My invention relates to lasting-jacks adapted 'especially as a device to last felt boots; and

it has forl its object the lasting 0f felt boots, or boots made of similar material, in a rapid, economical, and efficient manner.

Figure 1 represents in side elevation my lastingjack with felt boot in section in its position on same, and Figs. 2 and 3 are respectively rear and front elevations of Fig. 1. Fig. 4 is an enlarged rear view of heel portion of lasting-jack, and Fig. is a vertical central section of Fig. 4. Fig. 6 is a side elevation of lasting-jack adapted to be operated by power, with one of the main-frame standards removed in order to show more clearly the power-driving mechanism. Fig. 7 is a front elevation of Fig. 6, with the lower portion of one of the main-frame standards broken and removed to show more distinctly the powerdriving mechanism. 'A

The lasting-jack is made preferably of iron, except the last, which is made preferably of wood, and the spring, which is made preferably of steel; but all the parts may be made of any' suitable material, and the lasting-jack is designed to be bolted to the floor of the building in which it is .used in order to secure sufficient rigidity.

The main-frame standards 10 and 11 are' bolted together by means of bolts, which perform duty as pivots for the links 12, 13, 14, and 15. The standards are held by said bolts at such a distance apart as will permit the free-movement between them of said links.

The front portion of the last 16 is adapted to receive pivotally, by means of bolts, the links 12 and 14 and connecting-rod 17. Its upper front portion is provided with an offset, into which the rear portion of the toe-last 18 is designed to fit. The rear portion of the ylast 19 is adapted to receive pivotally, by

means of bolts, the links 13 and 15 and conmeeting-rod 20. Its upper rear portion is ser- Ain any well-known manner.

rated, as shown on enlarged scale by Figs. 4 and 5. The connecting-rods 17 and 2O are pivotally secured by means of a bolt to the lever 21. One end of thel lever is pivotally fastened, by means of a bolt, to fulcrum-stand 22. The other end of the lever is adapted to be operated by the foot-power of the operator. To the lever 21 is fastened one end of the spiral spring 28. The other end of the spring is fastened to one of the main-frame standards.

The arrangement, as shown, of the device is such that in operation, when a felt boot to be lasted is placed upon the lasting-jack, the operator, by pressing the lever 21 down with his foot, causes the front and rear portions of the last 16 and 19 to be drawn down vertically by means of their being connected, as described, to the lever 21 by connecting-rods 17 and 20, and at the same time said front and rear portions, by reasonA of their being connected to the main standard-frame 11 by the links 12, 13, 14, and 15, in a manner as shown and described, areprojected horizontally, thereby stretching the boot. The function of the spiral spring is to pull up the lever and its connecting parts when the foot pressure is removed from the lever.

The function of the serrated part of the rear portion of the last 19, by the repeated footpressure movement of the lever and its con'- nected parts until the felt boot is sufficiently lasted, is to draw the felt boot onto the toelast 18, and also to form the heel and other portions of the felt boot.

My lasting device maybe operated by power One style of power operation is shown by Figs. 6 and 7.

The upper portion of the device, except what is shown in Figs. G and 7, may be the same. The lower portion, as represented by said iigures, is made as follows: The connecting-rods 17 and 2O are pivotally connected to the sliding frame 24 by means of bolts. The lower portions of the main-framev standards are of a form, as shown, necessary to provide room for the correct locating and operating of the power-driving mechanism. The crankpulley 25, which is driven by belt or other suitable means of .conveying power, is journaled in the bearing 26. Is is also provided with the crank-pin 27, which is adj ustable Within the crank-pulley in the usual wellknown manner. 'lo the crank-pin 27 is iitted the box 28, which is free to slide in the slot or way 29. The sliding fraine 21 is guided by means of guide-slot 30 and pin 81 and guide 32. The device is what is sometimes called a sliding cross-head device, and its operation is as lfollows: Vhen the cranlcpulley is rotated, the crank-pin and box, by reason of their engagement with sliding frame, will cause the sliding frame to be reciprocated in vertical lines, and in use the result of its reeiproeations, by reason of its connection with the upper portion of the lasting-jack by means of connecting-rods 17 and 2U, will be the same or nearly the same as if the lasting-jack were operated by the foot-lever meel1anism,as shown by Figs. 1, 2, and 3. The crank-pin being adjustable, the length of the stroke of the sliding frame may be governed.

The operation of my device used to last' felt boots is as follows: A felt-boot bat, made in the usual manner by the deposit of wool sliver upon a suitable former from a Woolcarding j :riesco engine, is iulled and hardened in the usual manner. 'llien it is opened sufficiently to alloW the toe-last to be placed in its position, and then it is subjected to the stretching and forming necessary, after which it is removed from the lasting-jack and subjected to the usual methods employed to produce a finished felt boot-that is to say, it is treed and dried and trimmed. f

' XVhat I claim as new, and desire to secure by Letters Patent, is

The last portion 16, provided with offset to receive toe-last, and last portion 19, provided with serrated heel, in combination with links 12, 13, 14, and 15, connecting-rods 17 and 20, main-frame standards 10 and 11, lever 21, and spring 23, substantially as described.

In testimony whereof lhave signed my name to this specification, in the presence oftwo subscribing Witnesses, on this 31st day of January, A. D. 1887.

DANIEL F. MESSER.

Witnesses:

E. FRANK WooDnURY, JOSEPH H. SHEPHERD. 

